20826772 has 12 divisors (see below), whose sum is σ = 36479520. Its totient is φ = 10404056.

The previous prime is 20826697. The next prime is 20826791. The reversal of 20826772 is 27762802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5979 + ... + 8797.

It is an arithmetic number, because the mean of its divisors is an integer number (3039960).

Almost surely, 2^20826772 is an apocalyptic number.

It is an amenable number.

20826772 is a deficient number, since it is larger than the sum of its proper divisors (15652748).

20826772 is a wasteful number, since it uses less digits than its factorization.

20826772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670 (or 4668 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 20826772 is about 4563.6358312205. The cubic root of 20826772 is about 275.1317143144.

The spelling of 20826772 in words is "twenty million, eight hundred twenty-six thousand, seven hundred seventy-two".